Usoro teknụzụ zuru ezu nke electrode graphite

Ihe dị mkpa nke usoro extrusion bụ na mgbe tapawa gafere na nozzle nke ụfọdụ udi n'okpuru nrụgide, ọ na- compacted na plastically deformed n'ime oghere nwere ụfọdụ udi na size.
Usoro ịkpụzi extrusion bụ tumadi usoro nrụrụ plastik nke mado.

A na-eme usoro extrusion nke tapawa n'ime ụlọ ihe (ma ọ bụ cylinder paste) na oghere arc okirikiri.
The na-ekpo ọkụ mado na loading ụlọ na-chụpụrụ azu isi plunger.
A na-amanye gas dị na pasta ka a na-achụpụ ya mgbe niile, a na-ejikọta ya na pasta na-aga n'ihu n'otu oge ahụ.
Mgbe tapawa ahụ na-agagharị na akụkụ cylinder nke ụlọ ahụ, a na-ahụta tapawa ahụ dị ka mmiri siri ike, na oyi akwa granular bụ ihe yiri ya.
Mgbe mado na-abanye n'akụkụ nke extrusion nozulu na arc deformation, na mado nso n'ọnụ mgbidi bụ isiokwu ka ukwuu esemokwu iguzogide n'ihu, ihe na-amalite na-ehulata, na mado n'ime na-arụpụta dị iche iche tupu ọsọ, n'ime mado aga n'ihu na. aga n'ihu, n'ihi na ngwaahịa tinyere radial njupụta bụghị edo, otú na extrusion ngọngọ.

A na-ebute nrụgide dị n'ime site na ọsọ ọsọ dị iche iche nke ime na n'èzí.
N'ikpeazụ, tapawa na-abanye n'ime akụkụ deformation linear na extruded.

Kedu ihe bụ ịsa nri? Gịnị bụ nzube e ji amịkpọ?

Nri bụ usoro ọgwụgwọ okpomọkụ nke ngwaahịa raw abịakọrọ na-ekpo ọkụ n'otu oge n'okpuru ọnọdụ nke ikewapụ ikuku na ihe nchebe na ọkụ ọkụ.

(1) Wepụ volatiles Maka ngwaahịa ndị na-eji coal asphalt dị ka ihe nkedo, ihe dị ka 10% volatiles na-ahapụkarị mgbe anụchachara. Ya mere, ọnụego ngwaahịa a ṅara n'ọkụ na-adịkarị n'okpuru 90%.

(2) Binder coking raw ngwaahịa na-eghe n'ọkụ dị ka ụfọdụ nkà na ụzụ ọnọdụ na-eme ka binder coking. A coke netwọk e hiwere n'etiti mkpokọta ahụ ike jikọọ niile mkpokọta na dị iche iche urughuru nha, nke mere na ngwaahịa nwere ụfọdụ anụ ahụ na chemical Njirimara. .N'okpuru otu ọnọdụ ahụ, ọnụ ọgụgụ dị elu nke coking na-eme ka ọ dịkwuo mma. Ọnụ ọgụgụ coking nke ọkara - okpomọkụ asphalt bụ ihe dịka 50%.

(3) Ụdị geometric edobere

N'ime usoro iri nri nke ngwaahịa raw, ihe omume nke nro na ịkwaga na-ejikọta ya mere. Site na mmụba nke okpomọkụ, a na-emepụta netwọk coking, na-eme ka ngwaahịa ndị ahụ sie ike. Ya mere, ọdịdị ya adịghị agbanwe ka okpomọkụ na-ebili.

(4) Belata resistivity
Na usoro iri nri, n'ihi mkpochapụ nke ihe na-agbanwe agbanwe, coking nke asphalt na-etolite grid coke, decomposition na polymerization nke asphalt, na nhazi nke nnukwu netwọk ụgbọ elu hexagonal carbon mgbanaka, wdg, resistivity belatara nke ukwuu. Ihe dị ka 10000. x 10-6 raw ngwaahịa resistivity Ω “m, mgbe agbachara site na 40-50 x 10-6 Ω” m, nke a na-akpọ ezigbo ndị nduzi.

(5) Mgbakwunye olu ọzọ
Mgbe anụchachara, ngwaahịa a na-ebelata ihe dịka 1% na dayameta, 2% n'ogologo na 2-3% na olu.

The raw ngwaahịa mgbe mkpakọ ịkpụzi nwere nnọọ ala porosity.
Otú ọ dị, mgbe a gbasachara ngwaahịa ndị ahụ, akụkụ nke asphalt coal na-aghọ gas wee gbapụ, akụkụ nke ọzọ na-abanyekwa n'ime coke bituminous.
Olu coke bituminous emepụtara dị obere karịa nke bitumen coal. Ọ bụ ezie na ọ na-adaba ntakịrị na usoro ịsa nri, ọtụtụ pores na-adịghị agafe agafe na obere oghere ndị nwere oghere dị iche iche ka na-etolite na ngwaahịa ahụ.
Dịka ọmụmaatụ, ngụkọta porosity nke ngwaahịa graphitized na-abụkarị 25-32%, yana nke ngwaahịa carbon bụ 16-25%.
Ịdị adị nke ọnụ ọgụgụ buru ibu nke pores ga-emetụta ọdịdị anụ ahụ na kemịkal nke ngwaahịa.
N'ikwu okwu n'ozuzu, graphitized ngwaahịa na ụba porosity, mbelata olu njupụta, ụba resistivity, n'ibu ike, na a ụfọdụ okpomọkụ nke ọxịdashọn ọnụego na-accelerated, corrosion iguzogide na-aka njọ, gas na mmiri mmiri ọzọ mfe permeable.
Impregnation bụ usoro iji belata porosity, mụbaa njupụta, na-abawanye ike mkpakọ, belata ihe mgbochi nke ngwaahịa emechara, ma gbanwee ihe anụ ahụ na kemịkal nke ngwaahịa ahụ.

Graphitization: Gịnị bụ graphitization?

Gịnị bụ nzube nke graphitization?

Graphitization bụ usoro ọgwụgwọ okpomọkụ na-ekpo ọkụ dị elu site na iji ngwaahịa bred na-ekpo ọkụ na okpomọkụ dị elu na ihe nchebe nke ọkụ graphitization iji mee ka grid ụgbọ elu hexagonal carbon atom gbanwee site na mgbagwoju anya n'ụzọ na-adịghị mma na oghere abụọ ka ọ na-adaba n'usoro n'usoro na oghere atọ. na usoro graphite.

ebumnobi ya bụ:
(1) Meziwanye okpomọkụ na ọkụ eletrik nke ngwaahịa ahụ.
(2) Iji meziwanye nguzogide ujo okpomọkụ na nkwụsi ike nke ngwaahịa ahụ.
(3) Meziwanye mmanu mmanu na iyi nguzogide nke ngwaahịa.
(4) Wepu ihe ndị na-adịghị ọcha ma kwalite ike ngwaahịa.

(1) Mkpa maka ịwa ahụ plastik

Ngwaahịa carbon agbakwunyere nwere ụfọdụ nha na ọdịdị nwere ogo nrụrụ dị iche iche na mmebi nkukota n'oge ịsa nri na eserese. N'otu oge ahụ, a na-ejikọta ụfọdụ ihe ndochi n'elu ngwaahịa carbon abịakọrọ.
Enweghị ike iji ya na-enweghị nhazi ígwè ọrụ, ya mere, ngwaahịa a ga-eme ka ọ bụrụ ọdịdị ma hazie ya ka ọ bụrụ ọdịdị geometric akọwapụtara.

(2) Mkpa maka ojiji

Dị ka onye ọrụ chọrọ maka nhazi.
Ọ bụrụ na graphite electrode nke ọkụ eletrik steelmaking chọrọ jikọọ, ọ ga-mere n'ime threaded oghere na ma nsọtụ nke ngwaahịa, mgbe ahụ abụọ electrodes kwesịrị jikọọ na-eji na pụrụ iche threaded nkwonkwo.

(3) chọrọ teknụzụ

Ekwesịrị ịhazi ngwaahịa ụfọdụ ka ọ bụrụ ụdị pụrụ iche na nkọwapụta dịka mkpa teknụzụ nke ndị ọrụ siri dị.
Ọbụlagodi ala ala ala ka achọrọ.